[photran] I can't install photran

[Marcelo Vanti <vanti@xxxxxxx>]

Hi,
 I installed Luna, and if i want to install anything(CDT, Photran) I 
get the following error message in details:
An error occurred during the 
org.eclipse.equinox.internal.p2.engine.phases.CheckTrust phase.
session context was:(profile=epp.package.standard, 
phase=org.eclipse.equinox.internal.p2.engine.phases.CheckTrust, 
operand=, action=).
Error reading signed content.
error in opening zip file

Thanks for any help,
Marcelo Vanti

--
Marcelo Grafulha Vanti
Coordenador do Curso de Engenharia de Telecomunicações
Universidade de Blumenau - FURB
e-mail:vanti@xxxxxxx
fone:  (47) 3221 6028